[Swimlanes] Add resource graph drop directive

Issue #599

platform/features/timeline/bundle.js

@@ -37,6 +37,7 @@ define([
     "./src/capabilities/CostCapability",
     "./src/directives/MCTSwimlaneDrop",
     "./src/directives/MCTSwimlaneDrag",
+    "./src/directives/MCTResourceGraphDrop",
     "./src/services/ObjectLoader",
     "./src/chart/MCTTimelineChart",
     "text!./res/templates/values.html",
@@ -67,6 +68,7 @@ define([
     CostCapability,
     MCTSwimlaneDrop,
     MCTSwimlaneDrag,
+    MCTResourceGraphDrop,
     ObjectLoader,
     MCTTimelineChart,
     valuesTemplate,
@@ -566,6 +568,13 @@ define([
                         "$interval",
                         "$log"
                     ]
+                },
+                {
+                    "key": "mctResourceGraphDrop",
+                    "implementation": MCTResourceGraphDrop,
+                    "depends": [
+                        "dndService"
+                    ]
                 }
             ],
             "services": [

platform/features/timeline/src/directives/MCTResourceGraphDrop.js

@@ -0,0 +1,70 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define(
+    ['./SwimlaneDragConstants'],
+    function (SwimlaneDragConstants) {
+
+        /**
+         * Defines the `mct-resource-graph-drop` directive. When a drop occurs
+         * on an element with this attribute, the swimlane targeted by the drop
+         * will receive the dropped domain object (at which point it can handle
+         * the drop, typically by toggling the swimlane graph.)
+         * @param {DndService} dndService drag-and-drop service
+         */
+        function MCTResourceGraphDrop(dndService) {
+
+            function link(scope, element, attrs) {
+                // Handle dragover
+                element.on('dragover', function (e) {
+                    scope.resourceGraphLegendropOver = true;
+                    scope.$apply();
+                });
+                // Handle drops
+                element.on('drop', function (e) {
+                    var swimlane = dndService.getData(
+                        SwimlaneDragConstants.TIMELINE_SWIMLANE_DRAG_TYPE
+                    );
+
+                    // Only toggle if the graph isn't already set
+                    if (!swimlane.graph()) {
+                        swimlane.toggleGraph();
+                    }
+                });
+                // Clear highlights when drag leaves this swimlane
+                element.on('dragleave', function () {
+                    scope.resourceGraphLegendropOver = false;
+                    scope.$apply();
+                });
+            }
+
+            return {
+                // Applies to attributes
+                restrict: "A",
+                // Link using above function
+                link: link
+            };
+        }
+
+        return MCTResourceGraphDrop;
+    }
+);